The demo goes with the switch set as follows: parallel, series, parallel with a pick, and series with a pick.
Story behind the song
Using a significantly upgraded Squier Standard P-Bass Special. The functional upgrades are as follows:
Pickups - set of Seymour Duncan Quarter Pounders in the p-bass slot and a Seymour Duncan STK-J2 in the bridge position
Bridge - Wilkinson w/ brass saddles
Wiring - cloth wiring, with 500k pots (forget the brand), a series/parallel switch, switchcraft jack.